Improvement in self-registering lumber-measure



da in 3 o dmail have @mail DEXTER E. PEASE AND GEORGE RICHARDS, OFRICHLAND CENTRE,

WISCONSIN.

Letters Patent No. 88,203, (lated March 23, 1869.

ers Patent and making part of the same.

To all whom it may concern:

Be it known that we, DEXTER E. Pnasn and GEORGE RICHARDS, of RichlandCentre, in the county of Riehland, and in the State of W'isconsin, haveinvented certain new and useful Improvements in Lumber-Measure and dohereby declare that the following is a full, clear, and exaotdescriptionthereof, reference being had to the accompanying drawings, and to theletters of reference marked thereon.

The nature of our invention consists in the construction and arrangementof a device by which the number of square feet iu different lengths oftimber can be oomputed at one and the saine time.

In order to enable others skilled in the art to which our inventionappertains, to make and use the same, we will now proceed to describeits construction and operation, referring to the annexed drawings,vwhich forni,

a part of this specification, and in which- Figure l is a side view;

Figure 2, a bottom view;

Figure 3, a top view;

Figure 4, a bottom view, showing a different arrangement land v Figure5, a side view of the same.

A represents the handle, to the end of which is pivoted a disk, B. Y

This disk is grooved, on its bottom, or under side, with a series ofgrooves, marked respectively from eight to twenty, according to thelength of the timber which is to be measured. These grooves are allcircular, and have a common centre, namely the pivot of the disk; andthe face of the disk is provided with a series of circles, correspondingwith the grooves on the bottom side.

Each of these circles is divided into as many equal partsas thecorresponding groove is marked.

The outer periphery of the disk B, which is exactly one foot, is dividedinto twelve equal parts, each thus being an inch in length.

All the circles on the face of the disk are so divided, that the lastnumber oi' each will come at the point indicated by a straight linedrawn from the centre of the disk to the point where the ligure 1L', atthe periphery, is placed.

To the handle A, is a stationary finger, or indicator,

C, secured, which points along the face of the disk B, for a purposethat will be hereinafter set forth.

To the handle A, is also attached an adjustable springarm, D, whichextends along the same and under the` disk B; and to the end of saidspring, under the disk, is pivoted a small wheel, E, which, with thespring-arm D, is so arranged, that the wheel can be placed in any ofthecircular grooves on the under side ofthe disk.

A cog-wheel, F, which has sixty eogs, is also pivoted to the spring-armD, in such a manuel', that a; pin, a, which is placed on the wheel E,willturn the cog-wheel F one cog at each revolution it makes.

The wheel E is divided in ten equal parts, and the i cogfwhe'el F ismarked so that the cogs can be easily counted.

rllhe operation of the device is as follows:

Set the disk B so that the twelvednoh line shall come directly under thepointer, or index C. The small wheel E is to be set so that the smallpin [t shall have just passed out o f the cog on the'oog-wheel F, whichit turns; and this latter so set that the cog No. 60 shall come oppositea pin, b, on the spring-arm D, to which the wheels, are attached. It' itis desired to measure eight-feet lumber, the small wheel E is placed inthe smallest groove,

nu rked 8. Take by the handle and put the large wheel, or disk B, sothat the pointer, or index C shall be at the edge of the board. Thenbear on it suiicieutly hard to turn the wheel, and run it across theboard till the index shall come to the other edge, and in the sainelmanner with the next.

It will be seen that in so turning the disk B, the smaller wheel E isturned by the friction, and at each revolution of the saine, the pin aturns the cog-wheel F the distance of one cog.

After measuring the eight-feet boards, and tis desired to measure, inaddition, boards, say, fourteen feet in length, the wheel E is raisedont of the groove marked 8, and placed in the one marked 14, and then goon as before.4V And so in the case with any other length.,

Vhen'done, to find the number of square feet measured, annex a cipher tothe number of the cog opposite the pin h, on the spring, to which addthe number of feet indicated by the board-measure on face of the disk.For example, if cog 42is at the pin, or point l), that indicates fourhundred `and twenty square feet, by annexing a cipher; and if the indexC is at l0, 0n the periphery of the wheel B, and the length of the boardlast measured is twelve feet, look at the number on circle 12,corresponding with l0 on the periphery, which is also 10, then add thatto the four hundred and twenty,

which makes four hundred and thirty square feet of lumber measured.

Instead of havinggrooves on the under side oi' the disk B, we mayprovide it with a Series of circular tianges, as shown in tigs. 4 and 5,where the different parts are marked, respectively, A', B', D, and E.

Having thus described the construction and operation of' ourlumber-measure, we will now briefly state the principle| upon which thesame is constructed.

We take the friction-wheel E, running in groove marked 10, upon which webase our calculations. The diameter of both this friction-wheel and thegroove marked l0, is one and one-half inch, so that at eachrevolution/df the measuring-wheel B, with the friction-wheel in saidgroove, gives the friction-wheel one revolution, which movesthe-.indeX-wheel F one cog, denoting ten square feet of lumber measured.Two revolutions would give two cogs, or twenty square feet.

Now, the ratio of the diameters of the grooves, or

`projections, for each additional foot in length of the the groove whichindicated the ten feet.

lumber to be measured, above ten, is fteeu one-hun dredths of an inchgreater than the groove marked l0, which we have taken as a standard. Sothat, for

eleven feet, a groove one and sixty-five one-hundredths of an inch indiameter would be required; for twelve feet in length, a circle, orgroove of oueand eighty onehundredths of an inch in diameter; thirteenfeet, one and ninety-five one-hundredths of au inch in diameter;fourteen feet, two and ten one-hundredths of an inch; and so on up totwenty feet in length, when the diameter should be three inches, ortwice the diameter of For shorter lengths than teu, the grooves shouldbe correspondingly less in size.

The grooves which should be marked by odd` uumbers, We did not deem itnecessary to show, as what is shown and described, fully illustrates theprinciple.

The wheel E, which, as above described, is turned by friction, may beprovided with cogs on its edge, for turnmg.

The wheel, or disk B, may belprovided, on its uuder side, with a pin, c,arranged, in connection with a spring, d, on the handle, in such amanuel' that every time the indicator C points-at N o. 12, on the disk,it will give notice to the operator.

Having thus fully described our invention,

What we claim as new, and desire to secure by Letters Patent, is-

i The arrangement of the handle'A, disk B, spring- 'arm D, 'iction-wheelE, and index-wheel F, all constructed as described, and operatingsubstantially as arid for the purposes herein set forth.

In testimony that we claim the foregoing, we have hereunto set ourhands, this 31st day of August, 1868.

DEXTER E. PEASE. GEO. RICHARDS. Witnesses:

J AMES H. MGPHEETEBS, M. V. DUs'rlN.

